Where does “cisterna” come from?

cisterna (Portuguese) comes from Latin cisterna, from Latin cista, from Ancient Greek κύστις, from Proto-Indo-European (s)kewH- — to cover, bedeck; cover.

cisterna (Portuguese): cistern

Definitions

cistern

Ancestry of “cisterna”, step by step

Step	Language	Word	Meaning
1	Latin	cisterna	cistern, tank (for water), reservoir
2	Latin	cista	a trunk, a chest, a casket; vocative singular of...
3	Ancient Greek	κύστις	bladder
4	Proto-Indo-European	(s)kewH-	to cover, bedeck; cover

Every word from Proto-Indo-European (s)kewH- →Every word from Ancient Greek κύστις →Every word from Latin cista →